Set default EC2_FILTERS for terraform (#493)

Author: alvarocabanas

test/provision/Makefile

@@ -3,7 +3,7 @@ include ../Ansible.common
 
 TERRAFORM_DIR := ./terraform
 ANSIBLE_FOLDER := ./terraform
-EC2_FILTERS ?= [""]
+EC2_FILTERS ?= ["ubuntu", "centos7", "centos8", "centos-stream", "sles-15.1", "sles-15.2", "sles-15.3",  "sles-15.4", "sles-15.5", "redhat", "debian-buster", "debian-bullseye", "debian-bookworm", "al"]
 
 .DEFAULT_GOAL := provision